Clutch.



H. E. COPFIN.

CLUTCH. APPLICATION FILED NOV. 6, 1908. I 935,644, Patented Oct. 5, 1909.

UNITED STATES EATEN OFF.

HOWARD E. COFFIN, OF DETROIT, MICHIGAN, ASSIGNOR TO CHALMERS-DETROIT MOTOR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

CLUTCH.

Specification of Letters Patent.

Application filed November 6, 1908.

Patented Oct. 5, 1909.

Serial No. 461,417.

To all whom 'it may concern:

Be it known that I, HOWARD E. CoFFIN, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State'of' Michigan, have invented certain new and useful Improvements in Clutches, of which the followingis a specification, reference being had therein to the accompanying drawings.

The invention relates to friction clutches of that type comprising conical male and female members, and the invention consists in certain features of construction as hereinafter set forth.

In the drawings-Figure 1 is a longitudinal section through the clutch; Fig. 2 is a section on line wm, Fig. 1: F i 3 is a view similar to Fig. 1 showing a di erent adjustment of the parts.

With the type of clutch to which my improvement applies, it is customary to provide the male member with a facing of flexible material, such as leather, secured at one ed e and yieldingly pressed outward by rein orcing springs, the latter being placed between the facing and the metallic head. The function of these springs is to make the gripping of the clutch more gradual, and by variation in theztension or the amount of movement permitted different effects may be produced.

It is the object of the present invention to provide means by which these springs may be readilyadjusted without dismounting the 35 clutch.

tween.

The members ofthe clutch are normally heldin engagement by sprin s D which are sleeved upon studs E secure to a revoluble member F mounted upon the hub of the member A. The springs D abut against the collars G upon the studs and bear with their opposite ends against recessed hearings in the member B, whereby the latter is yield- 'in l ressed into en a ement with the g a a springs is centrally secured to a pin or stud I which latter projects through an aperture J in the flange'of the member B. The inner ends ofthese studs or pinsare threaded and nuts K are in engagement therewith.

L is a spring pin or other locking device for holding the nuts in-diiferent positions of adjustment, and which engages with a slot K in the pin.

With the construction described, the springs H may beadjusted by withdrawing the pins L and, adjusting the nuts K so as to increase or diminish the amount of free movement permitted to the s ring in flexing. By such adjustment any deslred effect in the operation of the clutch, will be obtained. If it is necessary to remove or replace any of the springs, this may be done by disengaging the pin or locking device L and removing the nut K from the stud I, after which the latter may be withdrawn from the aperture J and the spring removed while the members of the clutch are in assembled relation.

What I claim as my invention is:

1. In a clutch, the combination with male and female members, of a flexible facin on one of said members, a removable rein orcing leaf spring for said facing, a stud 'secured to said spring and extending through a bearing on the. clutch member, and an adjustable nut on said stud for limiting the movement of said spring.

2. In a clutch, the combination with male and female clutch members, of a flexible facing on one of said members, a removable re-. inforcin leaf sprin interposed between the flexible facing and t e member carrying the samejand means for adjusting said spring.

3. In a clutch, the combination with male and female clutch members, of a flexible facing on one of said members, a removable reinforcing leaf spring for said facing, and sembled re1ati0n,-and means for limiting the 10 means for adjusting the spring, the niovefree movement of said sgrinflg. ment of said spring from the member carry- In testimony whereof a x my signature ing the sanie being positigely limited. 1 in presence of two'witnesses,

4. In a c utch the com ination' with ma e and female clutch members, of a flexible fac- HOWARD GOFFIN' ing on one of said-members, a reinfrcin Witnesses: leaf spring for said facing, removable an NELLIE KINSELLA;

replaceable while said members are in as, W. BELKNAP. 

